Research papers on fortified houses (some stronghouses and bawns included) in west Co. Offaly within the baronies of Ballyboy, Ballybritt, Ballycowan, Clonisk, Eglish and Garrycastle.
For each site there is one file of varying contents. The monument type, townland, parish and barony are mentioned as well as the R. M. P. (Record of Monuments and Places) registration number, the County Inventory Registration, the national grid and the ordnance datum.
There are individual field sheets which may contain details to the level of preservation, the nature of surviving structures, walls, earthworks, wooden structures, boundaries and neighbouring waterways or woodlands. There are sketches for most sites with interior and exterior elevations as well as site and floor plans. In addition most of the files include typewritten reports and photographs.